Antrorbis

Antrorbis breweri, common name Manitou cavesnail, is a species of freshwater snail with gills and an operculum, an aquatic gastropod mollusk in the family Lithoglyphidae.[2]

Antrorbis breweri
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Littorinimorpha
Superfamily:
Rissooidea
Family:
Lithoglyphidae
Genus:
Antrorbis

Hershler & Thompson, 1990[2]
Species:
A. breweri
Binomial name
Antrorbis breweri
Hershler & F. G. Thompson, 1990[2]
Synonyms[2]
  • Horatia sp. Hubricht, 1940[3]
  • Horatia micra
  • Antrobia breweri Hershler & F. G. Thompson, 1990 [orth. error at 2010 IUCN Red List]

Antrorbis breweri is the only species in the genus Antrorbis.[2] The generic name Antrorbis is derived from Classical Greek language word "antrum", that means a cave and from Greek language word "orbis", that means circle.[2]

The specific name breweri is in honor of Dr. Stephen Brewer, the owner of Manitou Cave.[2]

Distribution

This species is endemic to the United States and it is known only from its type locality.[1] The type locality is Manitou Cave, Little Wills Valley, Coosa River Basin, Fort Payne, Alabama.[2]

Description

The shape of the shell is discoidal.[2] The shell has 2.5-3.0 whorls.[2]

The width of the shell is 1.53-1.79 mm.[2] The height of the shell is 0.80-0.98 mm.[2]

The length of the whole animal is 2.7-3.0 mm.[2]

Ecology

Antrorbis breweri lives in cool stream in Manitou Cave.[2] It is threatened by habitat loss.[1]

References
  1. Mollusc Specialist Group (2000). Antrobia breweri [sic!]. 2006 IUCN Red List of Threatened Species. Archived June 27, 2014, at the Wayback Machine Downloaded on 6 August 2007.
  2. Hershler R. & Thompson F. G. (1990). "Antrorbis breweri, a new genus and species of hydrobiid cavesnail (Gastropoda) from Coosa River Basin, northeastern Alabama". Proceedings of the Biological Society of Washington 103(l): 197-204. PDF.
  3. Hubricht L. (1940). "A subterranean snail from an artesian well". The Nautilis 54(1): 34-35.
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